<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head><title>Help - Sentinel-1</title>


    <meta content="text/html; charset=iso-8859-1" http-equiv="Content-Type">
    <link href="../style.css" rel="stylesheet">
</head>
<body>
<table class="header">
    <tbody>
    <tr class="header">
        <td class="header">&nbsp; Sentinel-1 SLC to GRD<br>
        </td>
        <td align="right" class="header"><a href="nbdocs://org.esa.snap.snap.help/org/esa/snap/snap/help/docs/general/overview/SnapOverview.html"><img border="0"
                                                                                 src="../images/snap_header.jpg"></a></td>
    </tr>
    </tbody>
</table>
<h3>Sentinel-1 SLC to GRD</h3>
<p>
    The Toolbox provides a graph which applies processing to a Sentinel-1
    SLC product in order to generate a product similar to a GRD product
    generated by the IPF. However, the processing applied is not identical.<br>
    This will include:</p>

<ul>
    <li>Thermal noise removal</li>
    <li>Calibration</li>
    <li>Deburst and merge for TOPS data</li>
    <li>Multilooking</li>
    <li>Speckle filtering</li>
    <li>Slant Range to Ground Range conversion</li>
    <li>Scaling to 16 bit</li>
    <li>Updating metadata</li>
</ul>

<p>For the IW and EW GRD products, all the bursts in all
    sub-swaths are seamlessly merged to form a single, contiguous, ground range,
    detected image. </p>

<h4>Input</h4>
<ul>
    <li>The input to this operator should be Sentinel-1 SLC product.</li>
</ul>

<h4>Output</h4>
<ul>
    <li>The output of the operator is a GRD like product.</li>
</ul>


<h4>Parameters Used</h4>
<ul>
    <li>For the parameters used for each operator in the graph, user is referred to the on-line help of the
        corresponding operator.<br>
    </li>
</ul>


<br>
<p><img style="width: 650px; height: 500px;" alt="" src="images/SLCtoGRD.jpg"></p><br>
<h3>GRD</h3>
<p>The GRD Post Processing operator updates the product type, product name and other file ids in the metadata to make
    it a true GRD product.</p>

<h4>Input</h4>
<ul>
    <li>The input to this operator should be the GRD product generated by the S-1 SLC to GRD operator.</li>
</ul>


<h4>Output</h4>
<ul>
    <li>The output of the operator is the same product with the metadata and product name updated.</li>
</ul>

<h4>Parameters Used</h4>
<ul>
    <li>Non</li>
</ul>

<br>
<br>
<hr>
</body>
</html>